Yr atgynhyrchiad o'r locomotif
Yr atgynhyrchiad o'r locomotif yn ei gartref presennol, Amgueddfa Genedlaethol y Glannau.
Yr atgynhyrchiad o'r locomotif
Yr atgynhyrchiad o'r locomotif a'i wagenni bar haearn yn Amgueddfa Diwydiant a Môr Cymru ym 1983.

Loco Penydarren

Ar 21 Chwefror 1804, rhedodd y daith rheilffordd gyntaf am 9 milltir o weithfeydd haearn Penydarren i Gamlas Merthyr-Caerdydd, gan gyrraedd cyflymder o bron pum milltir yr awr. Aeth nifer o flynyddoedd heibio cyn bod trenau stêm yn dod yn fasnachol ymarferol, ond does dim amheuaeth nad Trevithick yn hytrach na George Stephenson oedd gwir dad y rheilffyrdd.

Ym 1803, aeth Richard Trevithick i weithio gyda Samuel Homfray, perchennog gwaith haearn Penydarren ym Merthyr Tudful. Roedd Homfray'n ymddiddori'n fawr yn yr injans gwasgedd uchel yr oedd y dyn o Gernyw wedi eu datblygu a'u defnyddio yn ei injans ffordd.

Anogodd Homfray Trevithick i ymchwilio i'r posibilrwydd o osod injan o'r fath mewn locomotif ar y rheilffordd newydd rhwng Penydarren a glanfa'r gamlas yn Abercynon.

Richard Crawshay

Mae'n debyg bod Trevithick wedi dechrau gweithio ar y locomotif yn hydref 1803, ac erbyn Chwefror 1804 roedd wedi ei gwblhau. Yn ôl bob sôn, roedd Richard Crawshay, perchennog y gwaith haearn cyfagos yng Nghyfarthfa, yn amheus iawn o'r injan newydd. Betiodd ef a Homfray 500 gini'r un gyda Richard Hill, o waith haearn Plymouth, p'un a allai'r injan dynnu deg tunnell o haearn i Abercynon a thynnu'r wagenni gwag yn ôl wedyn.

Aeth yr injan ar ei thaith gyntaf ar 21 Chwefror, a disgrifiodd Trevithick y daith yn fanwl:

"... ddoe aethom ar ein taith gyntaf gyda'r injan, gan dynnu deg tunnell o haearn mewn pum wagen, a saith deg o ddynion yn teithio arnynt ar hyd y ffordd ... tra 'roedd yr injan yn gweithio, teithiodd bron i bum milltir yr awr; ni roddwyd dŵr yn y boeler o'r cychwyn hyd ddiwedd y daith ... defnyddiwyd dau ganpwys o lo."

Yn anffodus, torrodd bolltyn ar y daith nôl a barodd i'r boeler golli dŵr, felly bu'n rhaid gwneud y tân yn llai ac ni chyrhaeddodd yr injan Benydarren tan y diwrnod canlynol. Rhoddodd hyn reswm i Crawshay honni na chyflawnwyd y daith fel y cytunwyd — ond ni wyddom a fu pen ar y mwdwl!

Y gwir oedd fod yr injan yn rhy drwm i'r cledrau, ac fe'i defnyddiwyd yn ddiweddarach fel injan sefydlog i yrru morthwyl gefail yng ngwaith haearn Penydarren.

Atgynhyrchiad Locomotif

Crëwyd yr atgynhyrchiad o'r locomotif sydd yn yr Amgueddfa heddiw gan ddilyn dogfennau a chynlluniau gwreiddiol Trevithick, sydd yn y National Museum of Science and Industry bellach. Aeth ar ei thaith gyntaf ym 1981 ac, yn rhyfedd, cafodd yn union yr un broblem â'r injan wreiddiol — torrodd y cledrau!

Mae locomotif Trevithick yn anhygoel o bwysig — does dim dwywaith am hynny. Ym 1800, y ffordd gyflymaf i bobl deithio ar y tir oedd ar gefn ceffyl; ganrif yn ddiweddarach, roedd system reilffordd helaeth dros y byd gyda threnau'n teithio'n rheolaidd ar gyflymder o hyd at chwedeg milltir yr awr. Fe ddigwyddodd y trobwynt hollbwysig hwn ym mis Chwefror 1804, yng Nghymru.

Locomotif Penydarren: Diwrnod Stemio

Ffilm dogfennu stemio locomotif Richard Trevithick yn Amgueddfa Genedlaethol y Glannau, Abertawe.

sylw(9)

Paulo Santos Monteiro
27 Mehefin 2018, 01:38
Hi, I've deep interest and passion about steam machinery, steamboats and steam railway wagon are magical to me. I wish built a scale model of the steaming Richard Trevithick’s Penydarren locomotive for my own Garden Railway. Will be great have access to the copies of the original plans for I can work on this project. Any help will be very much appreciated indeed. Thank you for your time.
Best regards,
Santos Mont.
Albert Ross
16 Mehefin 2018, 08:20
The only country to ever give acknowledgement of Trevithicks achievement was the Soviet Union Which issued a postage stamp commemorated the event.
McM
25 Hydref 2017, 03:55
Hi.. Could anyone possibly tell me where the original Trevethic Locomotive'' (Penydarren Locomotive) and what happened to it? Any info would be much appreciated...

Thanks...

Mark.....
ROY R. REYNOLDS
18 Hydref 2017, 07:35
How would I go about getting a copy of the plans used to build this reproduction locomotive? I am intrigued with it and would like to build a 7 1//2 inch gauge model of it.
Robert Protheroe Jones Staff Amgueddfa Cymru
16 Awst 2017, 13:15

Dear Dave,

Thank you for your enquiry. To answer will involve summarising the known and presumed history of the original locomotive and the conflicting historical evidence - which is too long and detailed to post here as it is many times the length of the web article. I will be delighted to send you this detailed information on the Museum’s consideration of the evidence, and decisions made when building the locomotive. Please could you email me via my Contact Page?

Best wishes,

Robert

Robert Protheroe Jones
Principal Curator - Industry
 

Sara Staff Amgueddfa Cymru
14 Awst 2017, 10:11

Hi there Dave,

Thank you for your questions. I have passed on your enquiry to our curator, who will respond here - they are currently on their summer holidays so please bear with us while we wait for them to return. Hopefully you will hear from them within the week.

Best wishes

Sara
Digital Team

Dave Woods
12 Awst 2017, 15:18
Hi,
I am a volunteer at the Romney Hythe and Dymchurch Light Railway in Kent and want to animate a model of the Penydarren locomotive. When I compare the configuration of your replica and that of the Airfix/Acadamy models and on-line drawings there are major differences. On your replica the chimney, firebox, coal wagon and driving position are at the flywheel end of the boiler with the piston shaft and valve gear at the other. However, the models and on-line drawings have the chimney, firebox, coal wagon and driving position at the same end as the piston shaft and valve gear. This latter configuration doesn't look practical for coaling but was it correct please?
Sara Huws Staff Amgueddfa Cymru
6 Hydref 2015, 10:11

Hi there Myles,

The curator has received your enquiry and will respond by email. I'm posting it here in full, so that anyone else interested in this topic can read it, too.

"I’m afraid that exact dates have not been set for the days on which the Museum’s conjectural reconstruction of Richard Trevithick’s Penydarren locomotive will be demonstrated in steam in 2016 as the Museum waits to see what other events are being held in the city and then either avoid clashes or timetable steam days to coincide with appropriate events.

The locomotive is usually steamed on a weekend day (usually Sundays but sometimes Saturdays, depending on other events) in late May, in late June, and in early September.

The dates for the two spring steam days will be set early in next year. If you keep an occasional eye on the National Waterfront Museum “What’s on” webpage, you should see the steam days listed around eight weeks before they take place.

Please note that steam days are dependent on dry weather and hence may have to be cancelled at short notice." - Robert Protheroe-Jones, Principal Curator - Industry

Myles Singleton
1 Hydref 2015, 11:40
I've just watched your film of the annual steaming of Trevithick's locomotive, and enjoyed it very much (though i'd have preferred it without the song, and with the sound of the engine)
I'd love to see the steaming, and will be very grateful if you're able to let me know when the next steaming i scheduled, please, to allow me to travel to see it.
I've lived in Cornwall for many years, and prior to that I was married to a Swansea girl, and lived in Ebbw Vale, and have a strong interest in what is a common culture.
Thank you.

Gadael sylw